Pricing and availability
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Average Price: $135
Standard/Professional
$100
$276+
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Budget
Standard
High-end
Price History
Based on price data from 1 merchant for "Electro-Harmonix Holy Grail". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
Unveiling the Electro-Harmonix Holy Grail, a true classic in the realm of reverb effect pedals. This coveted piece of gear, renowned for its customizable reverb settings, offers a universal solution for guitarists in need of that perfect echo. With its singular knob control and a choice of "spring," "hall," and "flerb" modes, it allows for a seamless blend between simplicity and versatility. Experience the timeless tone of this pedal that's been a favorite among musicians, maintaining its popularity over the years despite its larger enclosure.
Key Features:
- Single knob control for easy adjustment of reverb intensity
- Three selectable reverb modes: "spring," "hall," and "flerb"
- Larger enclosure, maintaining the classic design of earlier versions
Product specs
| Type | Electro-Harmonix Power Supply |
| Input Voltage Range | 120V AC, 60Hz |
| Output Voltage | 9V DC |
| Output Amps | 500mA |
| Polarity | Sleeve: Negative, Tip/Center: Positive |
| Compatibility | Electro-Harmonix Holy Grail (older styles) |
| Connectivity | 1/8" TS plug |
FAQs
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What types of reverb does the Electro-Harmonix Holy Grail offer?
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The Electro-Harmonix Holy Grail Reverb Pedal offers three reverb types: SPRING, HALL, and FLERB, each designed to provide unique ambient effects suitable for various musical styles.
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Is the Electro-Harmonix Holy Grail pedal digital or analog?
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The Holy Grail is a digital reverb pedal, featuring digital algorithms tailored for electric guitars but also suitable for other instruments and vocals.
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Can the Electro-Harmonix Holy Grail be used with instruments other than electric guitars?
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Yes, while the Holy Grail is designed for electric guitars, it works equally well with most instruments and voices, offering versatile reverb options.
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Does the Electro-Harmonix Holy Grail Reverb Pedal require a specific power supply?
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The Holy Grail requires a 9V DC power supply with a negative sleeve and positive tip polarity, typically provided with the pedal for optimal performance.
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How does the FLERB setting on the Electro-Harmonix Holy Grail differ from traditional reverb?
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The FLERB setting combines reverb with a flanger effect, creating a unique, modulated reverb sound that adds a swirling dimension to your tone.
Videos
ProGuitarShopDemos
Electro Harmonix Holy Grail Reverb
Electro Harmonix Holy Grail Reverb
ProGuitarShopDemos
Electro-Harmonix Holy Grail Reverb Pedal (Demo by Peter Stroud)
EHX
Electro-Harmonix Holy Grail Reverb Pedal (EHX Demo by TOM BURDA)
EHX
Electro-Harmonix Holy Grail Reverb | Reverb Demo Video
Reverb
GAS N' GO - EHX Holy Grail Reverb
60 Cycle Hum
The Gear Booth | EP2 | Electro-Harmonix Holy Grail Reverb
Gear Booth
Electro-Harmonix Holy Grail
StompCentraldotcom
Vintage Reverb Pedal for Only $50?... (2000s EHX Holy Grail)
feezo
Simply Stellar! EHX Electro-Harmonix Holy Grail Reverb Guitar Pedal Review -- Reid's Reivews
Reid's Reviews
ELECTRO HARMONIX Holy Grail Reverb
Kev_k_ life
EHX Holy Grail - Straight In Demo
Straight In Demos
EHX Holy Grail on GUITAR and BASS
About Knob
RT EHX Holy Grail demo
Ross Totino and Fans of Collision
Reviews
PROS
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Spring setting mimics real reverb tanks well
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Hall setting excels, enabling super wet sounds
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Flerb setting useful for ambient music
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Simple design, easy to use
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Durable, with over 15 years of reliable use reported
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Warm sound quality, especially good in its price range
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Versatile, works well with different music styles and equipment
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Does not color the original sound but enhances it
CONS
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Proprietary power supply, inconvenient for some users
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Sweet spot limited, too subtle below or overshadows dry signal above certain settings
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Limited control options, lacks pre-delay adjustment
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Sound quality not unanimously considered the best available
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Electro-Harmonix Holy Grail.
Features and functionality
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The older big box version is noted for being picky about power supplies and can be noisy if not properly powered.
Source -
The Holy Grail Plus offers control over blend and decay time, providing a more realistic reverb than the one-knob nano version.
Source -
The Holy Grail's Hall reverb is described as dark and moody, ideal for ambient music, yet it doesn’t muddy fast passages.
Source -
The Flerb setting becomes most usable at or below 9 o'clock on the dial, providing subtle movement similar to a tape delay flutter control.
Source -
The Neo version offers a plate reverb instead of the Nano's flerb, despite both sharing similar spring and hall settings.
Source -
Owners find the lack of time control on the reverb settings a limitation, often leading them to upgrade to the Holy Grail Plus for more versatility.
Source
Comparisons
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The Holy Grail is compared to the Keeley Omni Reverb, which offers a more useful plate reverb instead of the unique "flerb" mode.
Source -
The Holy Grail was replaced by a Strymon Flint after 20 years on one owner's board, indicating a preference for more modern features.
Source -
The Spring reverb on the Holy Grail offers a distinct, recognizable sound that differs from traditional spring reverbs like those in Fender Princetons.
Source -
Users compare the Holy Grail to the Line 6 Verbzilla, noting the latter's superior sound and broader options.
Source
User experience
Use cases and applications
Critic Reviews
4.5 out of 5
Based on 10 Reviews and 88 Ratings
222
holy moly
It's a bit overrated, I think, I don't know if it deserves the cult status it has. The sweet spot is reverb at 12 o'clock, spring setting. Below that it's too subtle, above the dry signal comes down. Sounds great, I use it a lot in the studio, but at the end of the day it's a lil' digital reverb in a kickass vintage housing.
552
Wonderful reverb, great for filling out sound
The Holy Grail features three types of reverb: hall, spring, and flerb, which is a flange+reverb setting. Each setting sounds great and fills out the tone of whatever one is playing very well. It can be used for ambient swells or delay work, or to round out a driven sound. The amount of reverb is modifiable, and the pedal could not be easier to use. I recommend this pedal very much for the price for those looking for a professional sound.
417
I'm tottaly sure that this is what Im lookin for
I always Loved to use reverb effect on my guitar but for real I dont like many buttons on any pedal. While I was playing Psychedelic songs I loved to use Hall of Fame but nowadays I'm really searchin' for a simple and great way for a Reverb sound like Holy Grail Classic
5455
5 stars for all it's done, but move on if you can.
This was always present for so many years even though FAR better reverb pedals have come along I can't rate lower because it served me so well for so many years. It does just what it says on the tin. There are far better reverb pedals available now (hell, in my collection-see Strymon BigSky! ) but this one will always hold a special place in my heart. Can't bring myself to sell them...
224
Nice, warm sounds.
Great reverb. There are better reverbpedals, but the warm sound is really great for a pedal in this pricerange. I like The sounds very much. Only con is that the pedal with the knob over 3 o' clock quite useless sounds.....
426
Very nice pedal
I like this reverb a lot, and it replaced a $45 tri-reverb pedal I used to have, so by comparison, I thought that this thing was the best I'd ever heard.
Simple and subtle
it does not colour my sound, but fills it out nicely... works best through Marshalls in the loop!
Artist usage
Add artist
John Frusciante began using the Electro-Harmonix Holy Grail Reverb around the time of the "By the Way" release in 2002. It was a regular feature on his pedalboard during the album tour, indicating its likely use in the studio sessions. This pedal also played a prominent role throughout the "Stadium Arcadium" era, as evidenced by the image available on Equipboard.
An Electro-Harmonix Holy Grail pedal can be seen in this photo of Parker's pedalboards. He can be seen in front of these pedalboards in this photo.
Thom Yorke can be seen with a Holy Grail pedal in this picture.
The Electro-Harmonix Holy Grail pedal is clearly visible on the pedalboard.
"For amps, I used old Marshall heads and Marshall 4x12 cabinets, as well as some smaller amps. I still use racks for effects, although I have a couple of pedals—a crazy Japanese fuzz called a Sanyi, a DOD FX76 Punkifier, and an Electro-Harmonix Holy Grail."
The Holy Grail can be seen on this Instagram photo of Hann's board in 2012, as well as on other photos on his Instagram.
In this source by Premier Guitar the Electro-Harmonix Holy Grail is listed as part of his studio gear.
The Electro-Harmonix Holy Grail Reverb Guitar Effects Pedal can be seen in this photo of Beck's pedalboard. It is in the bottom row, third pedal from the right (Beck's right, that is). The source photo is from Beck's performance at The Echo in Los Angeles on Mar 22, 2007.
In his 2005 "Pedal Board Spiel," Nels Cline lists the Electro-Harmonix Holy Grail reverb as part of his gear setup.
"I'm a sucker for reverb pedals. I would save my Electro-Harmonix Holy Grail reverb."
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“Jeff Tweedy’s acoustic pedal board just consists of an Electro Harmonix Holy Grail Reverb, a volume pedal, and the ubiquitous Boss TU-2 tuner.” - Austin City Limits.
Album Usage
The Electro-Harmonix Holy Grail has been featured on the following albums:
As Alive As You Need Me To Be
Nine Inch Nails (2025)
New York in the Rain (Xiu Xiu Remix)
Xiu Xiu (2020)
Azure
Vinyl Williams (2020)
King Of Bones
Black Rebel Motorcycle Club (2017)
La Di Da Di
Battles (2015)
The Bones of What You Believe (Special Edition)
Chvrches (2013)
Is Your Love Big Enough?
Lianne La Havas (2012)
Stadium Arcadium
Red Hot Chili Peppers (2006)
Good Reason
Seafood (2004)
By the Way
Red Hot Chili Peppers (2002)
The Fragile
Nine Inch Nails (1999)
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
Used With
Based on how musicians on Equipboard use Electro-Harmonix Holy Grail, it is most commonly used with the following gear.
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Community setups
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